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I have gone through the following article regarding Taxonomy Session in Sharepoint

But I couldn't get actual usage of taxonomy.I have assumed that taxonomy which is similar to store and retrieve data in Porperty bag.If my assumption is right or wrong could anyone help me to proivde why taxonomy and what is the need of taxonomy ?

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up vote 2 down vote accepted

I see that the article you does not explain broad concepts behind Managed Metadata. In order to understand why it is necessary, I prefer to see a real world examples and its usage in SharePoint world.

To understand the concepts, you can refer to following articles:

And when you are ready to plan/design the managed metadata, you can refer to Plan managed metadata (SharePoint Server 2010)

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Thanks For your reply – Ramalingam Jan 11 '12 at 19:19

Taxonomy is formally defined as the practice of classification according to natural relationships.

The taxonomy can be thought of as a system of classification or a hierarchy of terms that includes synonyms, translations and descriptions

A very good example, to understand the basic concept of taxonomy and its need, is looking at biological classification Kingdom-> Phylum-> Class-> Order-> Genus-> Species we learned in high school biology.

In SharePoint 2010, Taxonomy Support is provided through the managed metadata infrastructure. Managed metadata is a hierarchical collection of centrally managed terms that you can define, and then use as attributes for items in SharePoint 2010.

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Thanks For your reply – Ramalingam Jan 11 '12 at 19:19

Using Taxonomy documents can be tagged and then can be filtered based on the tags

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